Once a citellan reaches adulthood, it seems to have a deeper grasp of its abilities and is often more willing to help a companion magi. Though the extent of their powers is not yet fully understood, citellans are known to be very wise and insightful creatures that can instinctually distinguish many varieties of plants. They are also well-known for their powers over the land and their ability to influence the fertility or decay of the soil, but no magi has yet been able to determine if this is a controlled power. Much about the natural history of citellans remains a mystery, even to those who study them extensively; there is still a raging debate over whether they are truly an animal or a plant. Adult citellans choose one mate to remain with for life, and these pairs may often be seen toting around sproutlings in desperate, but futile, attempts to keep the youngsters out of trouble. The magi provide adult citellans with offerings of food for their efforts, and a variety of fresh produce is laid out for sproutlings, though the latter often choose to ignore it in favor of Keep larders. As citellans age, they tend to become less picky about their food, though each one seems to develop a taste for a favorite treat that their magi is obliged to carry when travelling.

Citellans are rare in the lands around the Keep, but at the start of autumn, they gather in great numbers as if to celebrate the crop harvest. Though squirrel-like in appearance, citellans are far more migratory than their rodent counterparts. Citellans migrate constantly, moving from place to place as the seasons pass, constantly searching for ripe grain and fresh seeds. They eat surprisingly little despite their constant search for food, selecting only the choicest crops to fill their bellies. Because of their influence over the land, wise farmers will harvest all but the richest portion of their crops, leaving a small patch for the migrating citellans. This ensures that the ground will remain fertile, and the next year’s crops will grow hardy and full. As winter approaches, the citellans move south to warmer lands, where they will sleep underground in wait of the Vernal Equinox to signal the start of spring. Citellans are revered for their powerful earth magic, though whether they have active control over the fertility of the land, or emit an aura that affects the soil, is unknown. Magi who choose these creatures as companions will note their sensitivity to the earth; in the presence of vibrant fields, citellans become energetic and playful, but become distressed should they pass through land ravaged by destructive magic or human forces. Given time, a citellan's presence will eventually restore part of a disrupted environment to its original splendor.